Analysis of each bank:

• Bank 1: Financial reporting internal control failures suggest poor risk management and governance, indicating a lack of caution.
• Bank 2: Above-average equity-based compensation may incentivize risk-taking behavior to achieve higher returns, which is not risk averse.
• Bank 3: Being fast to provide for losses and rarely recording large asset write-downs indicates conservative accounting practices and a cautious approach to risk management.

Therefore, Bank 3 is most likely to have a risk averse and cautious culture.